SOLUTION: In a random sample of 29 ​people, the mean commute time to work was 34.2 minutes and the standard deviation was 7.1 minutes. Assume the population is normally distributed and
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Question 1043429: In a random sample of 29 people, the mean commute time to work was 34.2 minutes and the standard deviation was 7.1 minutes. Assume the population is normally distributed and use a t-distribution to construct a 95% confidence interval for the population mean μ. What is the margin of error of m μ? Interpret the results.
The confidence interval for the population mean μ is? Round to one decimal place as needed Answer by Boreal(15235) (Show Source):
You can put this solution on YOUR website! 95% CI is mean +/- t(0.975, df=28)*s/sqrt(29)
The interval is 2.0484*7.1/sqrt(29)=+/-2.70 minutes=margin of error
The 95% interval is (31.5,36.9) units are minutes.
